package com.example.demo.controller;

import com.example.demo.common.AppResult;
import com.example.demo.common.ResultCode;
import com.example.demo.config.AppConfig;
import com.example.demo.model.Message;
import com.example.demo.model.User;
import com.example.demo.service.IMessageService;
import com.example.demo.service.IUserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.NonNull;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.List;

@Slf4j
@Api(tags="站内信入口")
@RestController
@RequestMapping("/message")
public class MessageController {

    @Resource
    private IMessageService messageService;
    @Resource
    private IUserService userService;

    @ApiOperation("发送站内信")
    @PostMapping("/send")
    public AppResult send(HttpServletRequest request,
                          @ApiParam("接收者Id") @RequestParam("receiveUserId") @NonNull Long receiveUserId,
                          @ApiParam("内容") @RequestParam("content") @NonNull String content) {
        //获取当前登录用户信息
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //1.当前登录用户的状态，如果是禁言状态不能发站内信
        if (user.getState() == 1) {
            //返回用户状态异常
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }
        //2.不能给自己发站内信
        if (user.getId() == receiveUserId) {
            return AppResult.failed("不可以给自己发送站内信");
        }
        //3.效验接收者是否存在
        User receiveUser = userService.selectById(receiveUserId);
        if (receiveUser == null || receiveUser.getDeleteState() == 1) {
            //返回接收者状态不正常
            return AppResult.failed("接收者状态异常");

        }
        //4.封装对象
        Message message = new Message();
        message.setPostUserId(user.getId());//发送者id
        message.setReceiveUserId(receiveUserId);//接收者Id
        message.setContent(content);//站内信的内容

        // 5.调用Service
        messageService.create(message);
        // 6.返回结果
        return AppResult.success("发送成功");
    }

    @ApiOperation("获取未读数")
    @GetMapping("/getUnreadCount")
    public AppResult<Integer> getUnreadCount(HttpServletRequest request) {
        //1.获取当前登录用户
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //2.调用Service
        Integer count = messageService.selectUnreadCount(user.getId());
        //3.返回效果
        return AppResult.success(count);
    }

    @ApiOperation("查询用户的所有站内信")
    @GetMapping("/getAll")
    public  AppResult<List<Message>> getAll(HttpServletRequest request){
        //1.获取当前登录的用户
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        //2. 调用Service
        List<Message> messages = messageService.selectByReceiveUserId(user.getId());

        //3.返回结果
        return AppResult.success(messages);
    }

    @ApiOperation("更新为已读")
    @PostMapping("/markRead")
    public AppResult markRead (HttpServletRequest request,
                               @ApiParam("站内信ID") @RequestParam ("id") @NonNull Long id){
        // 1. 根据Id查询站内信
        Message message = messageService.selectById(id);
        // 2. 站内信是否存在
        if (message == null || message.getDeleteState() == 1) {
            // 返回错误信息
            return AppResult.failed(ResultCode.FAILED_MESSAGE_NOT_EXISTS);
        }
        // 3. 站内信是不是自己的
       HttpSession session = request.getSession(false);
       User user = (User) session.getAttribute(AppConfig.USER_SESSION);

        if (user.getId() != message.getReceiveUserId()) {
            // 返回错误信息
            return AppResult.failed(ResultCode.FAILED_FORBIDDEN);
        }

        // 调用Service, 把状态更新成已读
        messageService.updateStateById(id, (byte) 1);
        // 返回结果
        return AppResult.success();

    }
    @ApiOperation("恢复站内信")
    @PostMapping("/reply")
    public AppResult reply (HttpServletRequest request,
                            @ApiParam("要回复的站内信ID") @RequestParam("repliedId") @NonNull Long repliedId,
                            @ApiParam("站内信内容") @RequestParam ("content") @NonNull String content){
        //效验当前登录的用户状态
        HttpSession session = request.getSession(false);
        User user = (User) session.getAttribute(AppConfig.USER_SESSION);
        if(user.getState()==1){
            //返回错误描述
            return AppResult.failed(ResultCode.FAILED_USER_BANNED);
        }
        //效验要回复的站内信状态
        Message existsMessage = messageService.selectById(repliedId);
        if(existsMessage == null || existsMessage.getDeleteState() == 1){
            //返回错误描述
            return AppResult.failed(ResultCode.FAILED_MESSAGE_NOT_EXISTS);

        }
        //不能给自己回复
        if(user.getId() == existsMessage.getPostUserId()){
            //返回错误描述
            return AppResult.failed("不能回复自己的站内信");
        }
        //构造对象
        Message message = new Message();
        message.setPostUserId(user.getId());//发送者
        message.setReceiveUserId(existsMessage.getPostUserId());//接收者
        message.setContent(content);//内容
        //调用Service
        messageService.reply(repliedId,message);
        //返回结果
        return AppResult.success();
    }


}
